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74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPerturbCoincidentVertices.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/*-------------------------------------------------------------------------
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Copyright 2009 Sandia Corporation.
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Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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the U.S. Government retains certain rights in this software.
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-------------------------------------------------------------------------*/
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/**
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* @class vtkPerturbCoincidentVertices
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* @brief Perturbs vertices that are coincident.
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*
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*
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* This filter perturbs vertices in a graph that have coincident coordinates.
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* In particular this happens all the time with graphs that are georeferenced,
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* so we need a nice scheme to perturb the vertices so that when the user
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* zooms in the vertices can be distiquished.
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*/
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#ifndef vtkPerturbCoincidentVertices_h
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#define vtkPerturbCoincidentVertices_h
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#include "vtkGraphAlgorithm.h"
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#include "vtkInfovisLayoutModule.h" // For export macro
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#include "vtkSmartPointer.h" // for ivars
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class vtkCoincidentPoints;
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class vtkDataSet;
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class VTKINFOVISLAYOUT_EXPORT vtkPerturbCoincidentVertices : public vtkGraphAlgorithm
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{
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public:
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static vtkPerturbCoincidentVertices* New();
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vtkTypeMacro(vtkPerturbCoincidentVertices, vtkGraphAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Specify the perturbation factor (defaults to 1.0)
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*/
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vtkSetMacro(PerturbFactor, double);
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vtkGetMacro(PerturbFactor, double);
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//@}
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protected:
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vtkPerturbCoincidentVertices();
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~vtkPerturbCoincidentVertices() override;
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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private:
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// This class might have more than one method of coincident resolution
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void SpiralPerturbation(vtkGraph* input, vtkGraph* output);
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void SimpleSpiralPerturbation(vtkGraph* input, vtkGraph* output, float perturbFactor);
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float PerturbFactor;
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vtkPerturbCoincidentVertices(const vtkPerturbCoincidentVertices&) = delete;
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void operator=(const vtkPerturbCoincidentVertices&) = delete;
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};
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#endif
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